blob: 329305e6a1d9e199501260f50a8b352ae27a9a81 [file] [log] [blame]
// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=cd7543fa8c9f3cede46dc2d72eb8c4bd
REG_FIDDLE(Bitmap_extractAlpha_3, 256, 128, false, 0) {
void draw(SkCanvas* canvas) {
SkBitmap alpha, bitmap;
bitmap.allocN32Pixels(100, 100);
SkCanvas offscreen(bitmap);
offscreen.clear(0);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorBLUE);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(20);
offscreen.drawCircle(50, 50, 39, paint);
paint.setMaskFilter(SkMaskFilter::MakeBlur(kOuter_SkBlurStyle, 3));
SkIPoint offset;
bitmap.extractAlpha(&alpha, &paint, nullptr, &offset);
paint.setColor(SK_ColorRED);
canvas->drawImage(bitmap.asImage(), 0, -offset.fY, SkSamplingOptions(), &paint);
canvas->drawImage(alpha.asImage(), 100 + offset.fX, 0, SkSamplingOptions(), &paint);
}
} // END FIDDLE